This high-performance 40-Gigabit QSFP+ transceiver is designed for intermediate reach applications, bridging the gap between short-range multi-mode and long-range links. Supporting 40GBase-IR4 throughput over Single-mode Fiber (SMF), it delivers reliable connectivity up to 2km (1.24 miles). The module employs CWDM technology, multiplexing four 10G lanes to achieve 40G transmission over a single fiber pair. Operating at wavelengths of 1271nm, 1291nm, 1311nm, and 1331nm, it features a duplex LC connector and supports Digital Optical Monitoring (DOM) for real-time performance tracking. With an operating temperature range of 0°C to 70°C, it ensures consistent performance in various environments. As a TAA Compliant module manufactured in the USA or UK, it's fully eligible for U.S. Federal Government, military, and GSA-schedule projects. This transceiver combines robust performance with practical design, making it ideal for enterprise networks, data centers, and telecommunications infrastructure where intermediate reach is required.